Car-door mechanism.



No. 774,588. PATENTED NOV. 8, 1904.

' G. A. LINDSTR O M & F. DITGHFIELD.

CAR DOOR MECHANISM.

APPLIUATION FILED JUNE 23. 1904.

N0 MODEL. 2 SHEETS-SHEET 1.

WITNESSE I. ofVENTORS f 4 v $3.; 4 W

No. 774,588. PATENTED NOV. 8, 1.904.

G. A. LINDSTRUM (is F. DITCHFIELD. OAR DOOR MECHANISM.

APPLICATION FILED JUNE 23, 1904.

N0 MODEL. 2 SHEETSSHEET 2.

wn'usssss 0 INVENTORS Patented November 8, 1904:.

UNITED STATES PATENT OFFICE.

CHARLES A. LINDSTROM, OF ALLEGHENY, AND FRANK DITCHFIELD, OF BELLEVUE, PENNSYLVANIA, ASSIGNORS TO PRESSED STEEL CAR COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF NEW JERSEY.

CAR-DOOR MECHANISM.

SPECIFICATION forming part of Letters Patent No. 774,588, dated November 8, 1904. Application filed June 23, 1904. Serial No- 2l3,766. (No model.)

To all whmn it may concern:

Be it known that we, CHARLES A. LIND- s'rnon, of Allegheny, and FRANK DITOHFIELD, of Bellevue, Allegheny county, Pennsylvania, have invented a new and useful Car-Door Mechanism, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 shows aside elevation of part of a car provided with a door-fastening device constructed in accordance with our invention. Fig. 2 is a vertical cross-section on the line H II of Fig. l, the full lines showing the door in closed position and the dotted lines showing the door open. Fig. 3 is an end elevation. Fig. 3 is a detail view. Figs. 4: and 5, on the second sheet of the drawings, illustrate a modified construction, Fig. 4: being a side elevation and Fig. 5 being a vertical section on the line V V of Fig. A.

Our invention provides means by which cardoors can be held in closed position and in open position by simple and durable devices.

The preferable construction is shown in Figs. 1, 2, and 3 of the drawings, in which 2 is a car-door hinged at 3. The closing and opening device consists of a shaft4, journaled in brackets 5 beyond the ends of the door and having a crank portion 6, which is preferably somewhat longer than the door. The shaft has a handle 7, by which it can be turned. WVhen the door is closed, the parts occupy the positions shown in full lines in Fig. 2, the door then being swung to its place at the side of the car and the crank being directed inwardly-- and bearing against the outer side of the door. If it is desired to open the door, the crank is turned into the position shownin dotted lines in Fig. 3, so as to be moved below and out of the path of the door, whereupon the door will swing partly open. Then by raising the crank into the position shown in the upper dotted lines in Fig. 2 it is caused to engage the inner side of the door, and the door will be moved wholly open and will be held in open position. If it is then desired to close the door, the crank is moved out of the path of the door into the position indicated by the lower dotted lines in Fig. 2, whereupon the door will swing toward a closed position, and then by raising the crank it can be brought again into contact with the outside of the door and the door pushed into closed position, as shown in full lines in Fig. 2.

The mechanism affords simple and reliable means for holding the door either open or closed.

If desired, the shaft may be equipped with a pawl-and-ratchet mechanism, (shown in Fig. 3 and Fig. 3,) by which it may be held in any position to which it is set. The ratchet-Wheel 8 has notches 6 c, and the pawl 8 fits in the notch b when the door is closed and in the notch 0 when the door is open.

In the modification shown in Figs. L and 5 instead of extending the crank throughout the length of the door, as in Figs. 1, 2, and 3, we form short cranks 6' along the shaft, which engage lips 9, projecting downwardly from the door. The action is similar to that described with reference to Figs. 1, 2, and 3, except that the cranks act upon the lips in holding the door open and closed and not upon the body of the door.

The construction shown in Figs. 1, 2, and 3 has many special advantages, and we intend to make specific claim thereto.

We claim l. The combination of a door, and an arm adapted to be moved to engage the outside of the door or part of the door, and to be moved out of the path thereof, said arm being set relatively to the doorso that when the door is released and swings by gravity it will afford an opening for the passage of the arm to the inside; substantially-as described. 2. The combination of a door, and a crank adaptedto be moved to engage the outside of the door or part of the door, and to be moved out of the path thereof, said crank being set relatively to the door so that when the door is released and swings by gravity it will afford an opening for the passage of the crank to the inside; substantially as described.

3. The combination of a door, and an arm adapted to be turned against the outside of the door or a part of the door to hold the same closed, and movable downwardly out of the path of said door, said arm being adapted when the door swings open by gravity to be turned into engagement with the inside; substantially as described.

L. In combination with a door, a crank adapted to be turned in one direction to engage the outside of the door or a part of the door, and to be moved successively out of the path thereof and into engagement with the inside thereof, said crank extending the full length of the door; substantially as described.

5. The combination of a door, and a crank adapted to be moved to engage the outside of the door or part of the door, and to be moved out of the path thereof, said crank being set relatively to the door so that when the door is released and swings by gravity it will afford an opening for the passage of the crank to the inside, said door being hinged at its upper end, and the crank-shaftextending along the lower end of the door; substantially as described.

6. The combination of a door, and an arm adapted to be moved to engage the outside of the door or part of the door, and to be moved out of the path thereof, said arm being set relatively to the door so that when the door is released and swings by gravity it will afford an opening for the passage of the arm to the inside, and means for holding the arm in either position; substantially as described.

In testimony whereof We have hereunto set our hands.

CHARLES A. LINDSTROM. FRANK DITCHFIELD. Witnesses:

K. L. RoBINsoN, H. B. FIsHER. 

